Following on from a question I asked on the forums, I thought I'd report this as a bug: http://community.powerbi.com/t5/Desktop/Lines-are-changing-their-length-on-Power-BI-startup/m-p/356041#M160384 ...
v-qiuyu-msft
Community Support
Community SupportHi M_Potts,
I'm not able to reproduce the issue in Power BI desktop version 2.55.5010.621 64-bit (February 2018) which downloaded from download site. In your scenario, please try to update the desktop to the same version as ours. If issue persists, please share the pbix file with us.
Best Regards,
Qiuyun Yu